Datasheet

www.ti.com
PCM1774
SLAS551 – JULY 2007
Register 92
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Register 92 0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 LPAE RSV RSV LGA4 LGA3 LGA2 LGA1 LGA0
IDX[6:0]: 101 1100b (5Ch): Register 92
LPAE: Gain Adjustment for Bass Boost Gain Control
Default value: 0
A gain setting for bass boost may cause digital data saturation, depending on the input data level. Where this
could occur, LPAE can be used to set the same attenuation level as the bass boost gain level for the digital
input data.
LPAE = 0 Disable (default)
LPAE = 1 Enable
LGA[4:0]: Bass Boost Gain Control
Default value: 0 0000
These bits are used to set the bass boost gain level for the digital data. The detailed characteristics are shown in
the Typical Performance Curves .
LGA[4:0] TONE CONTROL GAIN (BASS) LGA[4:0] TONE CONTROL GAIN (BASS)
0 0000 0 dB (default) 0 1111 0 dB
0 0011 12 dB 1 0000 –1 dB
0 0100 11 dB 1 0001 –2 dB
0 0101 10 dB 1 0010 –3 dB
0 0110 9 dB 1 0011 –4 dB
0 0111 8 dB 1 0100 –5 dB
0 1000 7 dB 1 0101 –6 dB
0 1001 6 dB 1 0110 –7 dB
0 1010 5 dB 1 0111 –8 dB
0 1011 4 dB 1 1000 –9 dB
0 1100 3 dB 1 1001 –10 dB
0 1101 2 dB 1 1010 –11 dB
0 1110 1 dB 1 1011 –12 dB
37
Submit Documentation Feedback